Finding the Fourth Proportional to 809,747.97, 1,215,359.06 and 430,986.71
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Solution
The fourth proportional to 809,747.97, 1,215,359.06 and 430,986.71 is: 646,872.39
Step by Step Solution
- Step 1: Write the proportion equation
809,747.97 : 1,215,359.06 = 430,986.71 : x - Step 2: Convert to fraction form
809,747.97/1,215,359.06 = 430,986.71/x - Step 3: Cross multiply
809,747.97x = 1,215,359.06 × 430,986.71 - Step 4: Simplify right side
809,747.97x = 523,803,602,738.09 - Step 5: Solve for x
x = 523,803,602,738.09/809,747.97 - Step 6: Final answer
x = 646,872.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.